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Thanks. I didn't have a schematic for the circuit, so I just guessed. I looked for the input to the LM386. I wasn't sure if I should connect them with resistors or capacitors. I figured it was a 10k pot, so I would start with 10k resistors. I guess it kind of works like a blend knob. In...

The bluetooth is just for audio from my phone to the headphone amplifier. I use it to play along with youTube tab videos or youTube Music etc. So if there is a delay I can't tell. I still use a wired set of headphones from the amplifier, so my guitar signal is real time.

I think it just gets overlooked because it is in the "utility" section. It gets lost in all the breakout boards. But it does say NEW also.

I added Bluetooth to my Headphone Amplifier. The upper right toggle turns the module on/off and the blue LED shows BT module status. I wired in a 7805 voltage regulator to power the BT module with 5V. 10k resistors were used between the BT module output and the wipers of the Dual POT. There is a...